Michael L. Perica - 04 Mar 2026 Form 4 Insider Report for Rimini Street, Inc. (RMNI)

Role: EVP & Chief Financial Officer
Signature: /s/ Celeste Rasmussen Peiffer, as Attorney-in-Fact
Issuer symbol: RMNI
Transactions as of: 04 Mar 2026
Net transactions value: -$90,629
Form type: 4
Filing time: 06 Mar 2026, 20:43:36 UTC
Previous filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Perica Michael L.	EVP & Chief Financial Officer	C/O 1700 S. PAVILION CENTER DRIVE, SUITE 330, LAS VEGAS	/s/ Celeste Rasmussen Peiffer, as Attorney-in-Fact	06 Mar 2026	0001824290

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RMNI	Common Stock	Options Exercise		+38,313	+40%	$0.000000^*	133,990	04 Mar 2026	Direct
transaction	RMNI	Common Stock	Sale	$59,505	-16,335	-12%	$3.64	117,655	04 Mar 2026	Direct	F1
transaction	RMNI	Common Stock	Options Exercise		+18,774	+16%	$0.000000^*	136,429	04 Mar 2026	Direct	F2
transaction	RMNI	Common Stock	Sale	$31,124	-8,544	-6.3%	$3.64	127,885	04 Mar 2026	Direct	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RMNI	Restricted Stock Units	Options Exercise		-38,313	-33%	$0.000000^*	76,629	04 Mar 2026	Common Stock	38,313		Direct	F4, F5
transaction	RMNI	Performance Units	Options Exercise		-18,774	-33%	$0.000000^*	37,547	04 Mar 2026	Common Stock	18,774		Direct	F6, F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Reported transaction is an automatically-triggered "sell-to-cover" transaction related to the payment of withholding tax obligations pursuant to the Issuer's policy for tax withholdings associated with Restricted Stock Unit vesting events. The Reporting Person did not initiate the sale.
F2	Represents one third of the total 56,321 "Earned Performance Units" (as previously reported by the Reporting Person on a Form 4 dated February 20, 2026) under the terms of the Issuer's 2025 Long-Term Incentive Plan based upon the Issuer's achievement against a target "Adjusted EBITDA" performance goal for fiscal year 2025 and the Issuer's achievement against a target "Total Revenue" performance goal for fiscal year 2025, effective as of February 19, 2026 (the date the Issuer filed its Annual Report on Form 10-K for the year ended December 31, 2025).
F3	Reported transaction is an automatically-triggered "sell-to-cover" transaction related to the payment of withholding tax obligations pursuant to the Issuer's policy for tax withholdings associated with Performance Unit vesting events. The Reporting Person did not initiate the sale.
F4	Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.
F5	On March 4, 2025, the Reporting Person was granted 114,942 Restricted Stock Units, one-third of which vested on March 4, 2026. The remaining two-thirds will vest ratably on March 4, 2027, and March 4, 2028, generally subject to the Reporting Person continuing to be a Service Provider (as such term is defined in the Issuer's 2013 Equity Incentive Plan) through the vesting date.
F6	Each Performance Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.
F7	One-third of the "Earned Performance Units" vested on March 4, 2026. The remaining two-thirds vest ratably on March 4, 2027 and March 4, 2028, generally subject to the Reporting Person continuing to be a Service Provider (as such term is defined in the Issuer's 2013 Equity Incentive Plan) through the applicable vesting date.